CN110248913A - Disintegratable carbon composite, Manufacturing approach and use - Google Patents

Disintegratable carbon composite, Manufacturing approach and use Download PDF

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Publication number
CN110248913A
CN110248913A CN201780072078.6A CN201780072078A CN110248913A CN 110248913 A CN110248913 A CN 110248913A CN 201780072078 A CN201780072078 A CN 201780072078A CN 110248913 A CN110248913 A CN 110248913A
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carbon
adhesive
carbon composite
particle
alloy
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CN110248913B (en
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赵雷
徐志月
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Ge (ge) Beck Hughes Ltd
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Ge (ge) Beck Hughes Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/42Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/426Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0092Temporary binders, mortars or concrete, i.e. materials intended to be destroyed or removed after hardening, e.g. by acid dissolution
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/56Compositions for consolidating loose sand or the like around wells without excessively decreasing the permeability thereof
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60Compositions for stimulating production by acting on the underground formation
    • C09K8/62Compositions for forming crevices or fractures
    • C09K8/66Compositions based on water or polar solvents
    • C09K8/665Compositions based on water or polar solvents containing inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60Compositions for stimulating production by acting on the underground formation
    • C09K8/62Compositions for forming crevices or fractures
    • C09K8/66Compositions based on water or polar solvents
    • C09K8/68Compositions based on water or polar solvents containing organic compounds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60Compositions for stimulating production by acting on the underground formation
    • C09K8/84Compositions based on water or polar solvents
    • C09K8/86Compositions based on water or polar solvents containing organic compounds
    • C09K8/88Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C18/00Alloys based on zinc
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/007Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C19/00Alloys based on nickel or cobalt
    • C22C19/03Alloys based on nickel or cobalt based on nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/06Alloys based on aluminium with magnesium as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium
    • C22C23/02Alloys based on magnesium with aluminium as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/12Packers; Plugs
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/005Additives being defined by their particle size in general
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/22Expanded, porous or hollow particles
    • C08K7/24Expanded, porous or hollow particles inorganic

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Sealing Material Composition (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Gasket Seals (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Sealing Devices (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

A kind of carbon composite is disclosed, the carbon composite includes multiple carbon particles, wherein each of the multiple carbon particle includes multiple holes;And adhesive, it is placed in bond the multiple carbon particle between the multiple carbon particle, wherein described adhesive is disintegratable adhesive.

Description

Disintegratable carbon composite, Manufacturing approach and use
Cross reference to related applications
This application claims the equity on September 23rd, the 2016 U. S. application No.15/273843 submitted, the U. S. applications It is incorporated by reference and is incorporated herein.
Background technique
Invention field
This disclosure relates to carbon composite, and more particularly to include carbon and disintegratable adhesive carbon composite, Its manufacturing method and the product formed by it.
Background technique
Wellhole is drilled out in subsurface formations for generating hydrocarbon (petroleum and natural gas).Hydrocarbon is with being trapped in different depth underground In the various traps of layer or band.In many operations (such as pressure break), needs to provide sealing device in down well placement and (such as insulate Device, bridge plug etc.) to generate petroleum and natural gas.After such operation, before it can start following operation, it is necessary to remove or Destroy the sealing device.Such removal operation may be expensive and/or time-consuming.
It needs to provide and enough and stable sealing performances can be provided within the scope of wide temperature and pressure, while needed for offer And the sealing article for the disintegration feature being anticipated that.
This disclosure provides controlled disintegratable carbon composite and uses the disintegratable carbon composite In the system of down-hole application.
Summary of the invention
In one aspect, a kind of carbon composite is disclosed, the carbon composite includes multiple carbon particles, wherein described Each of multiple carbon particles include multiple holes;And adhesive, it is placed between the multiple carbon particle described more to bond A carbon particle, wherein described adhesive is disintegratable adhesive.
On the other hand, a kind of method for being used to form carbon composite is disclosed, includes more the method includes providing The carbon dust of a carbon particle, wherein each of the multiple carbon particle includes multiple holes;Binder powders are provided;It will be described Carbon dust and the mixing of described adhesive powder, to form carbon composite powder;And make described adhesive flow of powder, in institute It states and forms adhesive between multiple carbon particles to bond the multiple carbon particle, wherein described adhesive is disintegratable adhesive.
On the other hand, a kind of downhole system is disclosed, the downhole system includes downhole component, the downhole component packet Carbon composite is included, the carbon composite includes multiple carbon particles, wherein each of the multiple carbon particle includes more A hole;And adhesive, be placed in bond the multiple carbon particle between the multiple carbon particle, wherein described adhesive be can It is disintegrated adhesive.
The example of certain characteristics of devices disclosed herein and method is summarized, widely quite so as to more preferable geographical Solve following detailed description.Certainly, there are also other characteristics, other characteristics will be formed herein for device and method disclosed below The theme of the appended claims.
Detailed description of the invention
This disclosure can be best understood with reference to attached drawing, wherein identical number is indicated generally at identical want Element, and in the drawing:
Fig. 1 is the schematic diagram of exemplary drilling system, and the exemplary drilling system includes according to disclosure embodiment Downhole component;
Fig. 2 is the schematic diagram of the exemplary implementation scheme of disintegratable carbon composite;And
Fig. 3 shows the graphite particle suitable for disintegratable carbon composite shown in Fig. 2.
Specific embodiment
Fig. 1 shows to generate an exemplary implementation scheme of the downhole system of petroleum and natural gas.In certain realities It applies in scheme, system 100 allows fracturing work in order to generate petroleum and natural gas.System 100 includes wellhole 106, the well Hole 106 is formed in stratum 104, and is provided with casing 108 in the wellhole 106.
In an exemplary embodiment, wellhole 106 is drilled into down well placement 110 from earth's surface 102.Casing 108 can be set It sets in wellhole 106 in order to generating.In an exemplary embodiment, casing 108 is arranged through in down well placement 110 Multiple generating region Z1 ... Zn.Wellhole 106 can be vertical borehole, horizontal wellbore, deviated borehole or any other suitable class The wellhole or any combination of them of type.
For the ease of underground work (such as fracturing work), sealing element 116a, packer 116b are utilized in casing string 108 Or other suitable downhole hardwares.Other suitable downhole hardwares may include but be not limited to ball, plug, seat, compressible filler element (premier sealing element), bulking filler element (ARC sealing element), O-ring, adhesive seal, bullet shaped sealing element, SSSV are dynamic State sealing element, SSSV baffle seal, V-ring, support ring, drill bit seals, mud motor stator, PCP stator, ESP sealing Part and ESP isolating joint.In certain embodiments, sealing element 116a can be used be selectively partitioned region Z1 ... Zn with Carry out fracturing work.In certain embodiments, using packer 116b come area of isolation Z1 ... Zn to carry out fracturing work.Its Its suitable downhole hardware can be used for sealing and other purposes.In certain embodiments, downhole component can be exposed to high temperature, height Pressure and chemicals.
In certain embodiments, fracturing fluid 124 is pumped to down well placement 110 from frac fluid source 122, with flowing Perforation 114 in the region 112 being isolated by downhole hardware 116a, 116b.Advantageously, fracturing work allows to generate more Petroleum and natural gas.
After required operation (such as fracturing work) and before following operation, usually removes or destroy in other ways Downhole hardware 116a, 116b etc., to allow petroleum and natural gas to flow through casing 108.In an exemplary embodiment, Downhole hardware 116a, 116b be configured to seal regional area 112 casing 108 until downhole hardware 116a, 116b be disintegrated with Just predetermined time when petroleum and natural gas is generated.Advantageously, in an exemplary embodiment, downhole hardware herein 116a, 116b by have it is anticipated that and adjustable disintegration feature, while the environment of wide scope and under the conditions of allow to be suitable for close The material of envelope feature is formed.In certain embodiments, disintegration may include but be not limited to chemolysis, collapse as caused by mechanical force Solve, be disintegrated as the thermally-induced disintegration of heating power, as caused by physical energy etc..
In the embodiment illustrated, downhole hardware 116a, 116b can be made by carbon composite.Therefore, at one In embodiment, product includes carbon composite.Carbon composite can be used for being formed all or part of of product.
Fig. 2 shows the carbon composite articles 200 suitable for being used together with above-mentioned downhole component and product.In a reality It applies in scheme, product is packer, sealing element or the O-ring for downhole system (such as system 100 shown in fig. 1).
In the embodiment illustrated, carbon composite article 200 includes carbon particle 202 and adhesive 204.Favorably The use on ground, carbon composite article 200 allows disintegratable material to have wider temperature and pressure limit, can be used for recycling It can infeasible application.In addition, carbon composite article 200 can be used for needing wide temperature range and temperature may have fluctuation And the application of variation, such as steam injection application.
In the embodiment illustrated, carbon particle 202 can be the carbon of any suitable form, including but not limited to amorphous Carbon, natural graphite, carbon fiber etc..The formation of carbon particle 202 and the possible embodiment of structure can be found in United States Patent (USP) No 9, 284,229 and U.S. Patent application No.14/072,016, the two is assigned to Baker Hughes Inc (Baker Hughes Incorporated) and the two is incorporated herein by reference.
In the embodiment illustrated, carbon particle 202 is flexible and provides bullet in carbon composite article 200 Property.In the embodiment illustrated, and as shown in Figure 3, the diameter of carbon particle 202 can be between 5-500 micron, and thickness Degree is between 0.01 to 500 micron.
In the embodiment illustrated, carbon particle 202 includes hole 203 to allow carbon particle 202 to have elasticity.The elasticity Carbon composite article 200 is allowed to be used as chemistry and heat-staple sealing material.
In certain embodiments, carbon particle 202 is the expanded graphite particles for including hole 203.Graphite is stratified material.It is single Only layer is kept together by weak Van der Waals force, and the individual course can be embedded in organic or inorganic molecules, and finally expand with Form hole 203.Insertion is will to be embedded in the process that agent material is inserted between the independent carbon-coating of graphite.Various chemistry are used Product are embedded in graphite material.These chemicals include acid, oxidant, halide or the like.
When heated, intercalator from liquid or it is solid state transformed be gas phase.The formation of gas generates pressure, and the pressure pushes Adjoin carbon-coating to separate, generates expanded graphite.
In one embodiment, the expanded graphite of the disclosure is generated by following steps: using sulfuric acid, nitric acid, chromic acid, boron Sour or halide (such as FeCl3、ZnCl2、SbCl5) processing graphite material (such as natural graphite, kish graphite, heat resolve at Graphite etc.), to form expansible graphite;The quick heat expandable graphite under such as 800 DEG C or higher high temperature, to give birth to At pyrolysis gas, the pressure of the pyrolysis gas is used to make the volume expansions between graphite linings, to form expanded graphite.Certain In embodiment, graphite particle can be expanded by any suitable method.
In the embodiment illustrated, adhesive 204 can be used to be bonded together for carbon particle 202.Advantageously, adhesive 204 enable carbon composite article 200 to have high mechanical strength, while allowing to have seal feature as described herein.
In the embodiment illustrated, adhesive 204 is disintegratable adhesive, can be selective and controllable as needed Ground disintegration.In certain embodiments, adhesive 204 can the disintegration when being exposed to selected fluid, to allow particle 202 by well Lower fluid stream is washed off.
In certain embodiments, adhesive 204 is formed by corrodible metal (such as controlled electrolytic metal).Adhesive 204 materials can include: magnesium alloy, mg-si master alloy, magnesium alloy, magnesium-zinc alloy, magnesium-manganese alloy, Mg-Al-Zn Alloy, magnalium manganese close Gold, magnesium zinc zircaloy and magnesium rare earth element alloy.Rare earth element can include but is not limited to scandium, yttrium, lanthanum, cerium, praseodymium, neodymium and erbium. In certain embodiments, adhesive 204 can also comprise aluminium, nickel, iron, tungsten, copper, cobalt.Advantageously, corrodible metal adhesive 204 use allows to use carbon composite article in high temperature application (being including but not limited to higher than the application of 500 degrees Fahrenheits) 200.In an exemplary embodiment, corrodible metal adhesive 204 allows carbon composite article 200 in hot environment In be disintegrated in the desired amount of time and after being exposed to selected fluid.In certain embodiments, when corrodible metal adhesive 204 contact wellbore fluids in electrolyte components (such as salt water, acid etc.) when, corrodible metal adhesive 204 can via merchant method Buddhist nun's micro cell (galvanic microcell) reacts (anode-cathode reaction) disintegration or corrosion.In certain embodiments, negative Electrode catalyst element (such as miniature Jia Fani battery) is fabricated into corrodible metal adhesive 204.In certain embodiments In, cathod catalyst element may include nickel, iron, copper, cobalt, zinc, aluminium, tungsten etc..
In other embodiments, adhesive 204 can be including such as ester, amide, ether group or can by water or appoint The what polymer of other groups of its suitable fluid disintegration.In certain embodiments, adhesive 204 can be polyurethane. Advantageously, the use of polymer adhesive 204 allows in lower temperature application (including but not limited to answering lower than 500 degrees Fahrenheits With) in use carbon composite article 200.In an exemplary embodiment, polymer adhesive 204 allows carbon composite wood Material products 200 are disintegrated in the desired amount of time in lower temperature environments and after being exposed to selected fluid.In certain embodiment party In case, polymer adhesive 204 can be disintegrated via thermal decomposition.
In other embodiments, adhesive 204 can be other materials, including but not limited to toughened acrylic acid resin, ring Oxygen resin, low-melting-point metal (such as aluminium, magnesium, zinc, bismuth, tin, lead and their alloy) etc..In certain embodiments, low The fusing point of melting point metals is lower than the fusing point of carbon particle 202, but is higher than required processing temperature.It, can be by heat source after required operation It is introduced into carbon composite article 200 so that adhesive 204 is disintegrated via fusing.In certain embodiments, adhesive 204 can It include the combination of the metal or its alloy and cathod catalyst element including aluminium, manganese, zinc, iron etc..In certain embodiments In, when metal-to-metal adhesive 204 contacts electrolyte components (such as salt water, acid etc.) in wellbore fluid, metal-to-metal adhesive 204 can It is disintegrated or is corroded via Jia Fani micro cell reaction (anode-cathode reaction).In certain embodiments, cathod catalyst Element (such as miniature Jia Fani battery) is fabricated into metal-to-metal adhesive 204.In certain embodiments, cathod catalyst member Part may include nickel, iron, copper, cobalt, zinc, aluminium, tungsten etc..In certain embodiments, adhesive 204 may be formed by fragile material. In certain embodiments, fragile material may include but be not limited to the various intermetallic compounds based on aluminium or magnesium, such as Al3Mg2, Al12Mg17, Mg2Ni, Mg2Si, Al3Ni, FeAl, MgZn etc..Fragile material adhesive 204 can be chosen in institute Need maximum operating pressure and/or at a temperature of bonding aluminum-boron-carbon composites product 200, but can also be higher than required operational pressure and/ Or temperature pressure and/or at a temperature of selectively pressure break.After required operation, carbon composite article 200 can be introduced To raised pressure and/or temperature be disintegrated adhesive 204 via pressure break.In certain embodiments, fragile material can be with It is a part of adhesive 204, and in other embodiments, fragile material may be constructed the whole of adhesive 204.Brittleness material Material can form the 5-100% of adhesive 204.These materials can take on a different shape, such as particle, fiber and silk thread.It can be with Use the combination of the material.
In the embodiment illustrated, adhesive 204 can account for the 10% of the volume of carbon composite article 200 to Between 90%.By changing the amount of adhesive 204 and the composition of adhesive 204 relative to carbon particle 202, thus it is possible to vary carbon is compound The hardness and flexibility of material product 200.
This discovery allows to manufacture the carbon composite of the packer or sealing material that are suitable as down-hole application.As another The raw material of advantageous feature, carbon composite are environmentally friendly and at low cost.
Various methods can be used to manufacture carbon composite.In one embodiment, it is used to form carbon composite Method include by expanded graphite and the combination of at least one adhesive to form combination;And equal pressure pressures push contract the combination from And form carbon composite.
Alternatively, first being suppressed expanded graphite composition to form preform.Then by preform and bonding Agent is combined to form carbon composite.If desired, filled preform can further be compressed.
Advantageously, preform includes the expanded graphite matrix and aperture being connected to each other.It is a kind of generate aperture mode be The material of such as wax is added into expanded graphite, compression-expansion graphite is later to prepare preform.Wax is being removed by heating Later, connection aperture is formed in expanded graphite matrix.
Then adhesive is added in preform by permeating.In the case where adhesive is metal, can incite somebody to action first Metal-to-metal adhesive is heated to molten condition, then pours into molten metal binder to preform.Metal-to-metal adhesive filling is opened Hole, to form carbon composite.
Expanded graphite composition to prepare preform includes expanded graphite and optionally reinforcing agent.It can also be by wax It include that there is the preform for connecting aperture to prepare in expanded graphite composition.
In another embodiment, by grinding, shredding or milling (such as ball milling) that the expanded graphite of compression is (such as logical Cross the uniaxial power of application and person be made) it is broken into small fragment.The small fragment can be suppressed to form preform.Then Adhesive is added in preform to provide carbon composite as described herein.Alternatively, can be by small fragment and adhesive Or reinforcing agent is blended, then heat or cold compaction are to form carbon composite.It is also understood that can be used and consider above-mentioned operation Various combination.
In certain embodiments, carbon particle 202 and adhesive 204 can be mixed in powder form.It can will mix The powder closed equably mixes, and is then sintered, so that adhesive 204 encloses under the fusion temperature close to adhesive 204 It is flowed around carbon particle 202.In certain embodiments, the powder mixed can be compressed and is heated, so that adhesive 204 exists It is flowed close under the fusion temperature of adhesive 204 around carbon particle 202.The adhesive 204 of flowing allows to carbon composite system Product 200 are moulded.
Therefore, in one aspect, a kind of carbon composite is disclosed, the carbon composite includes multiple carbon particles, Described in each of multiple carbon particles include multiple holes;And adhesive, it is placed between the multiple carbon particle to bond The multiple carbon particle, wherein described adhesive is disintegratable adhesive.In certain embodiments, carbon includes amorphous carbon, day Right graphite, carbon fiber, or the combination comprising at least one of above-mentioned material.In certain embodiments, the multiple carbon Grain is multiple graphite particles.In certain embodiments, the diameter of each of the multiple graphite particle at 5 microns extremely Between 500 microns.In certain embodiments, the thickness of each of the multiple graphite particle is at 0.01 micron to 500 Between micron.In certain embodiments, adhesive is ester polymer.In certain embodiments, adhesive is amide polymerization Object.In certain embodiments, adhesive is ether polymer.In certain embodiments, adhesive is polyurethane.In certain realities It applies in scheme, adhesive is metal or alloy.In certain embodiments, adhesive is controlled electrolytic metal material.At certain In a little embodiments, adhesive is accounted for by volume between the 10% to 90% of carbon composite.In certain embodiments, it bonds Agent is at least one of the following terms: magnesium alloy, mg-si master alloy, magnesium alloy, magnesium-zinc alloy, magnesium-manganese alloy, magnalium zinc close Gold, magnalium manganese alloy, magnesium zinc zircaloy and magnesium rare earth element alloy.In certain embodiments, adhesive is low-melting-point metal Or low-melting alloy.In certain embodiments, adhesive is at least one of bismuth, tin and lead.In certain embodiments, Adhesive also comprises cathod catalyst element.In certain embodiments, cathod catalyst element be nickel, iron, copper, cobalt, zinc, At least one of aluminium and tungsten.In certain embodiments, adhesive includes fragile material.In certain embodiments, brittleness Material is between the 5% to 100% of adhesive.In certain embodiments, fragile material is at least one of the following terms: Al3Mg2, Al12Mg17, Mg2Ni, Mg2Si, Al3Ni, FeAl and MgZn.
In certain embodiments, product is downhole component.In certain embodiments, product includes in the following terms It is at least one: ball, plug, seat, compressible filler element, bulking filler element, O-ring, adhesive seal, bullet shaped sealing element, Dynamic sealing, baffle seal, V-ring, support ring, drill bit seals, mud motor stator, PCP stator, ESP sealing element With ESP isolating joint.
On the other hand, a kind of method for being used to form carbon composite is disclosed, the method includes providing comprising more The carbon dust of a carbon particle, wherein each of the multiple carbon particle includes multiple holes;Binder powders are provided;It will be described Carbon dust and described adhesive powder are mixed to form carbon composite powder;And binder powders are flowed, described more Adhesive is formed between a carbon particle to bond the multiple carbon particle, wherein described adhesive is disintegratable adhesive.At certain In a little embodiments, the method also comprises heating carbon composite powder so that binder powders flow.In certain implementations In scheme, the method also comprises compressed carbon composite powder so that binder powders flow.In certain embodiments, The method also comprises sintering carbon composite powder so that binder powders flow.In certain embodiments, the side Method, which also comprises, is selectively disintegrated adhesive so that carbon composite is disintegrated.
On the other hand, a kind of downhole system is disclosed, the downhole system includes the underground member of carbon composite Part, the carbon composite include multiple carbon particles, wherein each of the multiple carbon particle includes multiple holes;And bonding Agent is placed in bond the multiple carbon particle between the multiple carbon particle, and wherein adhesive is disintegratable adhesive.At certain In a little embodiments, downhole component is at least one of the following terms: ball, plug, seat, compressible filler element, bulking filler Element, O-ring, adhesive seal, bullet shaped sealing element, dynamic sealing, baffle seal, V-ring, support ring, drill bit are close Sealing, mud motor stator, PCP stator, ESP sealing element and ESP isolating joint.
Patent, patent application and other bibliography of all references are incorporated by reference and are incorporated herein.However, such as Term in fruit the application contradicts or conflicts with the term in be incorporated to bibliography, then the term in the application is prior to institute The conflict term being incorporated in bibliography.
All ranges disclosed herein includes endpoint, and endpoint can combine independently of one another.Suffix used herein " (a variety of) " are intended to include the odd number and plural form of its modified term, thus include at least one of the term (for example, (a variety of) colorant (colorant (s)) includes at least one colorant)." optional " or " optionally " mean then to describe Event or situation may or may not occur, and the description includes the case where that the event occurs and the feelings that do not occur of the event Condition.As used herein, " combination " includes blend, mixture, alloy, reaction product and the like.All bibliography with Way of reference is incorporated herein.
It unless otherwise indicated herein or is apparently contradicted in the context, otherwise in the context describing the invention (especially In the context of following following claims) term " one (a/an) " that uses should be interpreted to contain with "the" and similar indicant Lid singular and plural form.Further, it should further be noted that term " first " herein, " second " and similar terms Any sequence, quantity or importance are not indicated, but for distinguishing an element with another element.In conjunction with quantity The modifier " about " used includes described value, and has meaning as defined in context (for example, it includes and certain amount of measurement Relevant error degree).
Although describing the present invention by reference to one or more exemplary implementation schemes, those skilled in the art should be managed Solution, without departing from the scope of the invention, can carry out various changes, and it can be replaced to want with equivalent Element.In addition, without departing from the essential scope of the present invention, many modify so that particular condition or material adapt to can be carried out The teachings of the present invention.Therefore, the present invention is not intended to be limited to disclosed as optimal mode of the invention is contemplated for carrying out Specific embodiment, but the present invention will include all embodiments fallen within the scope of the appended claims.In addition, in attached drawing and In specification, exemplary implementation scheme of the invention has been disclosed, and although having used specific term, unless It is otherwise noted, otherwise they are only used in a generic and descriptive sense, rather than the purpose for limitation, therefore it is of the invention Range is without being limited thereto.In addition, the use of term first, second etc. does not indicate any sequence or importance, but indicate term the One, second etc. for distinguishing an element and another element.In addition, the use of term one (a/an) etc. does not indicate number The limitation of amount, but indicate that there are at least one of mentioned projects.

Claims (20)

1. a kind of carbon composite, the carbon composite include:
Multiple carbon particles, wherein at least some of the multiple carbon particle carbon particle includes multiple holes;And
Adhesive is placed in bond the multiple carbon particle between the multiple carbon particle, and wherein described adhesive is that can collapse Solve adhesive.
2. carbon composite as described in claim 1, wherein the carbon particle includes amorphous carbon, natural graphite, carbon fiber, or Combination comprising at least one of previous materials.
3. carbon composite as described in claim 1, wherein the multiple carbon particle is multiple graphite particles.
4. carbon composite as claimed in claim 3, wherein the diameter of each of described graphite particle at 5 microns extremely Between 500 microns.
5. carbon composite as claimed in claim 3, wherein the thickness of each of described graphite particle is at 0.01 micron To between 500 microns.
6. carbon composite as described in claim 1, wherein described adhesive is selected from the group being made of the following terms: polyisocyanate polyaddition Object;Amide polymer;Ether polymer;And polyurethane.
7. carbon composite as described in claim 1, wherein described adhesive accounts for the carbon composite by volume Between 10% to 90%.
8. carbon composite as described in claim 1, wherein described adhesive is metal or alloy.
9. carbon composite as claimed in claim 8, wherein described adhesive is at least one of the following terms: magnesium closes Gold, mg-si master alloy, magnesium alloy, magnesium-zinc alloy, magnesium-manganese alloy, Mg-Al-Zn Alloy, magnalium manganese alloy, magnesium zinc zircaloy and magnesium are dilute Eupolyphoge sinensis element alloy.
10. carbon composite as claimed in claim 8, wherein described adhesive is at least one of bismuth, tin and lead.
11. carbon composite as claimed in claim 8, wherein described adhesive also comprises cathod catalyst element.
12. carbon composite as described in claim 1, wherein described adhesive includes fragile material.
13. carbon composite as described in claim 1, wherein the carbon composite is the product for down-hole application.
14. product as claimed in claim 13, wherein the product includes at least one of the following terms: ball, plug, Seat, compressible filler element, bulking filler element, O-ring, adhesive seal, bullet shaped sealing element, dynamic sealing, baffle are close Sealing, V-ring, support ring, drill bit seals, mud motor stator, PCP stator, ESP sealing element and ESP isolating joint.
15. a kind of method for being used to form carbon composite, which comprises
The carbon dust including multiple carbon particles is provided, wherein each of the multiple carbon particle includes multiple holes;
Binder powders are provided;
The carbon dust and described adhesive powder are mixed, to form carbon composite powder;And
Make described adhesive flow of powder, to form adhesive between the multiple carbon particle to bond the multiple carbon Grain, wherein described adhesive is disintegratable adhesive.
16. method as claimed in claim 15, the method further includes heating the carbon composite powder so that institute State binder powders flowing.
17. the method described in claim 16, the method further includes compressing the carbon composite powder so that institute State binder powders flowing.
18. method as claimed in claim 15, the method further includes one in the following terms: it is multiple to be sintered the carbon Condensation material powder is so that described adhesive flow of powder;And selectively make described adhesive disintegration so that the carbon composite Disintegration.
19. a kind of downhole system, the downhole system include:
Downhole component comprising carbon composite, the carbon composite include:
Multiple carbon particles, wherein some carbon particles in the multiple carbon particle include multiple holes;And
Adhesive is placed in bond the multiple carbon particle between the multiple carbon particle, and wherein described adhesive is that can collapse Solve adhesive.
20. downhole system as claimed in claim 19, wherein the downhole component is at least one of the following terms: ball, Plug, seat, compressible filler element, bulking filler element, O-ring, adhesive seal, bullet shaped sealing element, dynamic sealing, gear Plate seals, V-ring, support ring, drill bit seals, mud motor stator, PCP stator, ESP sealing element and ESP isolating joint.
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US10233376B2 (en) 2019-03-19
EP3515878A1 (en) 2019-07-31
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